PoC Index

CVE-2020-14966

HIGH 7.5EPSS 1.1%

An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and '0' characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature.

CVSS v3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v2.0
5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
EPSS
1.12% chance of exploitation in the next 30 days, 64th percentile
Published
2020-06-22
Updated
2024-08-04

Proof-of-concept exploits (1)

References

Related